PL400256A1 - Method for preparing soluble chitin esters - Google Patents
Method for preparing soluble chitin estersInfo
- Publication number
- PL400256A1 PL400256A1 PL400256A PL40025612A PL400256A1 PL 400256 A1 PL400256 A1 PL 400256A1 PL 400256 A PL400256 A PL 400256A PL 40025612 A PL40025612 A PL 40025612A PL 400256 A1 PL400256 A1 PL 400256A1
- Authority
- PL
- Poland
- Prior art keywords
- chitin
- amount
- per
- dried
- mixture
- Prior art date
Links
- 229920002101 Chitin Polymers 0.000 title abstract 6
- 150000002148 esters Chemical class 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- 239000000047 product Substances 0.000 abstract 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 abstract 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract 2
- 239000003960 organic solvent Substances 0.000 abstract 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 abstract 2
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 abstract 1
- 229920001634 Copolyester Polymers 0.000 abstract 1
- 150000004075 acetic anhydrides Chemical class 0.000 abstract 1
- -1 butyrate anhydride Chemical class 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 238000005886 esterification reaction Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Przedmiotem wynalazku jest sposób otrzymywania estrów chityny rozpuszczalnych w rozpuszczalnikach organicznych. Sposób polega na tym, ze sproszkowana alfa chityne, korzystnie pozbawiana weglanu wapnia, miesza sie z bezwodnikiem maslowym uzytym w ilosci od 4 do 10 na 1 mol podstawowy chityny lub z mieszanina bezwodników maslowego i octowego i pozostawieniu tej mieszaniny w temperaturze od -20°C do +30°C na czas od 2 do 48 godzin. Nastepnie do tej mieszaniny dodaje sie powoli 70-72% kwas nadchlorowy w ilosci od 1,8 do 2,5 moli na 1 mol podstawowy alfa chityny i prowadzi sie reakcje estryfikacji w temperaturze od -30°C do +30°C od w czasie od 2 do 48 godzin, po czym mase poreakcyjna plucze sie kilkukrotnie czystym octanem etylu, uzytym w ilosci nie mniejszej niz 150 ml octanu etylu na 10 g masy poreakcyjnej, a nastepnie uzyskany produkt suszy sie w znany sposób. Wysuszony produkt rozpuszcza sie w rozpuszczalniku organicznym, którym moze byc alkohol etylowy, izopropylowy, aceton, dwumetyloformamid lub N-metylopirolidon, uzytym w ilosci od 20 do 50 ml na 1 g wysuszonego produktu, a powstaly roztwór poddaje sie filtracji klarujacej. Nastepnie sklarowany roztwór jest wylewany do wody i wytraca sie kopolimer, który suszy sie w znany sposób. Roztwory rozpuszczalnego estru lub kopoliestru chityny w alkoholu etylowym, izopropylowym, dwumetyloformamidzie, N-metylopirolidonie wedlug wynalazku moga byc uzyte jako gotowe tworzywo do wytwarzania wlókien lub folii.The present invention relates to a method for obtaining chitin esters soluble in organic solvents. The method consists in the fact that powdered alpha chitin, preferably devoid of calcium carbonate, is mixed with butyrate anhydride in an amount of 4 to 10 per 1 mole of basic chitin or with a mixture of butyrate and acetic anhydrides and leaving this mixture at a temperature from -20 ° C up to + 30 ° C for 2 to 48 hours. Then, 70-72% perchloric acid is slowly added to this mixture in an amount of 1.8 to 2.5 moles per 1 mole of basic alpha chitin and the esterification reaction is carried out at a temperature from -30 ° C to + 30 ° C over time. from 2 to 48 hours, after which the reaction mass is rinsed several times with pure ethyl acetate, used in an amount of not less than 150 ml of ethyl acetate per 10 g of the reaction mass, and then the obtained product is dried in a known manner. The dried product is dissolved in an organic solvent, which may be ethyl, isopropyl alcohol, acetone, dimethylformamide or N-methylpyrrolidone, used in an amount of 20 to 50 ml per 1 g of dried product, and the resulting solution is subjected to clarifying filtration. The clarified solution is then poured into water and the copolymer precipitates, which is dried in a known manner. The solutions of the soluble ester or copolyester of chitin in ethyl, isopropyl alcohol, dimethylformamide, N-methylpyrrolidone according to the invention can be used as a finished material for the production of fibers or films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL400256A PL220238B1 (en) | 2012-08-06 | 2012-08-06 | Method for preparing soluble chitin esters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL400256A PL220238B1 (en) | 2012-08-06 | 2012-08-06 | Method for preparing soluble chitin esters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL400256A1 true PL400256A1 (en) | 2014-02-17 |
| PL220238B1 PL220238B1 (en) | 2015-09-30 |
Family
ID=50097259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL400256A PL220238B1 (en) | 2012-08-06 | 2012-08-06 | Method for preparing soluble chitin esters |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL220238B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016027237A1 (en) | 2014-08-22 | 2016-02-25 | Celther Polska Sp. Z O.O. | The method of isolation and purification of (mono- and di-substituted) chitin esters and chitin copolyesters from reaction mixtures |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL226837B1 (en) | 2012-08-24 | 2017-09-29 | Celther Polska Spółka Z Ograniczoną Odpowiedzialnością | Active polymer layer formed of chitin derivatives, especially for dressing and its use |
-
2012
- 2012-08-06 PL PL400256A patent/PL220238B1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016027237A1 (en) | 2014-08-22 | 2016-02-25 | Celther Polska Sp. Z O.O. | The method of isolation and purification of (mono- and di-substituted) chitin esters and chitin copolyesters from reaction mixtures |
Also Published As
| Publication number | Publication date |
|---|---|
| PL220238B1 (en) | 2015-09-30 |
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